DOI: 10.1002/2017MS001026
Scopus记录号: 2-s2.0-85040717172
论文题名: Evaluation of the Runoff and River Routing Schemes in the Community Land Model of the Yellow River Basin
作者: Sheng M ; , Lei H ; , Jiao Y ; , Yang D
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期: 8 起始页码: 2993
结束页码: 3018
语种: 英语
英文关键词: Carbon
; Flood control
; Floods
; Flow of water
; Groundwater
; Heat flux
; Mean square error
; Network routing
; Rivers
; Routing protocols
; Runoff
; Soil moisture
; Surface measurement
; Vegetation
; Watersheds
; Community land models
; Kinematic wave routing
; Land-surface process
; Model representation
; Parameter calibration
; Physically based
; Root mean square errors
; Simulation performance
; Water resources
; calibration
; flood routing
; groundwater flow
; hydrological modeling
; land surface
; one-dimensional modeling
; river channel
; river flow
; runoff
; China
; Yellow River Basin
英文摘要: Runoff and river routing schemes play important roles in land surface models (LSMs) because they regulate the soil moisture, heat flux, and vegetation dynamics of land surface processes and account for the carbon and nutrient transport in river channels. However, these schemes are often simplistic and conceptual. Hence, in this study, we focused on (1) evaluating these schemes in the Community Land Model (CLM) and (2) altering the model representations using physically based schemes based on a study of the Yellow River basin. For runoff simulation, CLM exhibits limitations in water-limited areas, especially areas with aridity index values greater than 2. Additionally, CLM greatly overestimates runoff, and produces negative Nash-Sutcliffe efficiency (NSE) coefficients, few quick flow variations, high quick flow index values, and large root mean square errors of total water storage. These issues were greatly improved by implementing schemes of physically based overland flow, lateral soil water flow, and interchange between groundwater and river water. Furthermore, for the river routing scheme, the use of 1-D kinematic wave routing improved previously unrealistic aspects of the flood hydrographs (e.g., incorrect flood peak values and times) of the original CLM. Moreover, compared with using the grid element-based river routing approach in CLM, the computational costs were reduced by up to 45% by implementing the flow interval element method. Finally, our results indicate that parameter calibration in CLM minimally improved the simulation performance in water-limited areas, while physically based schemes generated better results. © 2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75688
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: State Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing, China; RCE-TEA, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Sheng M,, Lei H,, Jiao Y,et al. Evaluation of the Runoff and River Routing Schemes in the Community Land Model of the Yellow River Basin[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(8)